RECORDING DEVICE, RECORDING METHOD, REPRODUCTION DEVICE, REPRODUCTION METHOD, RECORDING MEDIUM, CODING DEVICE, AND DECODING DEVICE

WIPO Patent Application WO/2020/090457

A1

The present art relates to a recording device, a recording method, a reproduction device, a reproduction method, a recording medium, a coding device, and a decoding device by which high linear density recording or reproduction can be easily achieved. User data is coded into a multi-level edge code, and a multi-level code with values changing in accordance with the multi-level edge code is recorded. The multi-level edge code is generated by means of state-transition in a code generation model which: has a state indicating only the number of consecutive zeros of the consecutive 0 edges of edges indicating the amount of change from the value immediately before the multi-level code having ML values (3≤ML); when outputting zero, transitions to a state indicating the number of consecutive zeros including said zero; and when outputting a value between 1 and ML-1, transitions to a state indicating zero times as the number of consecutive zeros. The present art can be applied, for example, to a recording/reproduction device for performing recording/reproduction.

HIGASHINO SATORU (JP)

PCT/JP2019/040573

May 07, 2020

October 16, 2019

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SONY CORP (JP)

G11B20/12; G11B20/10; H03M5/14; H04L25/49

WO2017204001A1	2017-11-30
WO2016175035A1	2016-11-03

US6385255B1	2002-05-07
US9252808B1	2016-02-02
US6385255B1	2002-05-07

"White Paper: Archival Disc Technology", July 2018

NISHIKAWA Takashi et al. (JP)

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